Cross wire carpet loom



June 23, 1931. w HALL I CROSS WIRE CARPET. LOOM Filed Feb. 17, 1930 2Sheets-Sheet June 23, 1931. w H

CROSS WIRE CARPET LOOM Filed Feb. 17, 1930 2 Sheets-Sheet 2 mum.

25 bodying one form of my invention;

1 Fig. 4 is a view similar to Fig. 2

Patented June 23, 1931 UNITED STATES PATENT OFFICE WALTER HALL, OFWORCESTER, MASSACHUSETTS, ASSIGNOR TO M. J. WHITTALL AS- SOCIATES, OFWORCESTER, MASSACHUSETTS, A VOLUNTARY ASSOCIATION OF MAS- SACHUSETTScross wine canrnr 1.00M

Application filer. February 17, 1930. Serial No. 423,893.

This invention relates to a 100m for weaving Wilton or similar carpets,in which the pile is formed on transversely extending cross wires. Whena pile of more than average 5 height is formed in such a carpet, thepile warps cross so far at the rear of the fell of the cloth that thefilling thread when beaten up formsloops at the selvage which are quiteobjectionable in the finished fabric.

It is the object of my invention to provide mechanism by which a firmand satisfactory selvage is assured regardless of the height of thepile.

More specifically,.I provide a device by which the selvage pile warpsare depressed at the rear of the pile wire and closely adjacent thereto.

My invention further relates to arrangements andcombinations of partswhich will be hereinafterdescribed and more particularly pointed outinthe appended claims.

Two forms of my invention are shown in the drawings, in which 7 v Fig. 1is a plan view of parts of a loom em- Fig. 2 is a side elevation thereofwith certain .parts shown in section;

Fig. 3 is a rear elevation, looking in the direction of the arrowS inFig. 2;

but showing the parts in adiiferentposition;

Fig. 5 is a detail left hand sideelevation of certain parts;

Fig. 6 is a detail right hand side elevation 35 of additional parts;

Fig. 7 is a plan view showing a modified construction of my invention;

Fig. 8 is a side elevation, partly in section, of the mechanism shown inFig. 7

Fig; 9 is a detail rear elevation, looking in the direction of the arrow9 in Fig. 8, and

Figs. '10. and 11 are views similar to Fig. S'but showing the parts indiiferent'positions. I

Referring particularly to Figs. 1 to 6 inclusive, I have shown myinvention as embodied in a carpet loom comprising a loom frame 20, a lay21 supporting a reed 22, a breast beam or table 23 over which the fabricC and pile wires 'P are drawn forward,

and a wire holder 25 for retaining the pile wires in forward position.

The action of the holder 25 is clearly indicated in Fig. 5. The holder25 has a shoulder 26, a spacing lug 27 and a forwardly projectingportion 28. As the pile wires P are beaten up by the reed 22Vof the lay21,. the last inserted wire is advanced to the position indicated at Pin Fig. 5, being spaced from the last previous inserted wire by the lug27 and being held from rearwardmovement by the shoulder 26. I

The forwardly extending projection 28 rests upon and rides, overthepreviously in-' serted pile wires P.

After the last inserted pile wire 'Pis thus beaten up and secured fromrearward movement, the pile warps WV extend rearward to the harnesses,as indicated in Fig. 5, with the crossing of the warps occurring at apoint X which is a substantial distance rearward from the fell of thefabric. -When the filling F is inserted, it will pass rearward of thepoint X and the length of filling between the point X and the fell ofthe fabric will form a loop at the selvage when'the filling, is beatenup. This description of operation applies to the ordinary crosswirecarpet loom using a high pile wire and not equipped withmyiniprovements.

In order toprevent the crossing of the warpthreads WV substantiallyrearward of the pile wires, I have provided a warp depressing'device 30having a warp-engaging portion or plate 31 projecting laterallytherefrom over the'warp threads at the edge of the fabric which form theselvage'.

A stand32 is mounted on the breast beam or table 23 and is provided witha stud 33 extending through a slot3 1 in the depressing device 30. Astud 36 at the front end of the device 30 is connected by a tensionspring 37 to the stud 33 inthe stand 32 A recess 10 (Fig. 4:). is formedin the stand .32 to receive a spring 41 extending upward'to engage theunder side of the device 30. The spring 37 holds the device 30yieldingly, rearward and the spring 41 yields'to permit the rear end ofthe device 30 to be moved upward to the position indicated in Fig.4 as apile wire P;

is thrust forward by engagement by the reed 22.

As soon as the wire reaches its forward position and is engaged and heldby the wire holder 25, the depressing device moves downward at the rearof thelast inserted pile wire and depresses the warp threads passingover the wire to the position ind cated in Fig. 6, in which figure itwill be evident that the warp threads now cross at a point closelyadjacent the bottom edge of the plate 31 of the device 30.

IVith the warps thus crossed the filling F will be drawn straight fromthe rear face of the plate 31 rather-than around the crossing Xindicated in Fig. 5 and the objectionable loops at the selvage will thusbe entirely avoided.

' IVhen the lay beats up, the plate 31 is engaged by the reed and thedevice 30 s pushed forward, returning immediately to its operative rearposition as the lay thereafter moves rearward.

I have thus provided very simple mechanism by which the formation offilling loops at the selvage is effectively preventedregardless of theheight of the pile wires mserted in the weaving.

In Figs. 7 to 11 I have shownamodlfiedconstruction in which anattachment is provided which combines the functions of the wire holder25 and the warp depressing device 30. In this construction, a latch ispivoted at 51 on a stand 52 and is engaged by a spring 53 pocketed inthe stand 52andengag1ng the under side of the front end of the latch 50,thus depressing the hook-shaped rear end 54 thereof.

WVhen a newly inserted pile wire P is beaten up, the wire engages thecurved under surface of the hook-shaped portion 54, raising the latch asit passes thereunder. As soon as the wire is in forward position, thelatch snaps down behind the wire and prevents rearward movement thereof.This part of the device takes the place of the forwardly extending wireholder 25 heretofore commonly .used.

A plate 55 is mounted at the side of the latch 50 and is provided with astud 56 resting V on the upper edge of the latch 50 and with. a

cam slot 57 through which extends a stud 58 mounted on the latch 50. Aspring 59 connects the stud56 with a stud 60 on the hookshaped rearportion 54L of the latch 50 and draws the plate 55 yieldingly rearwardand downward. An offset warp-engaging plate 62- (Fig. 9) is formedon'the plate 55 and 1s positioned to engage the selvage warps W as inthe form previously described.

A plate 65 is secured to the plate 55 previously' described and at itsrear end is provided with an offset portion positioned for engagement bythe reed 71 as the lay moves forward;

The operation of this form of my invention is clearly indicated in Figs.8, 10 and 11.

When the pile wire reaches its forward position, the latch 50 drops tothe position indicated in Fig. llbut the warp depressing device is heldin the raised position indicated in Fig. 11 by engagement of the reed 71with the portion 70 of the plate 65. As the reed thereafter movesrearward, the warp depressing device movesdownward and slightlyrearward, being guided by the cam slot 57, and depresses the selvagewarps closely adjacent the last inserted pile wire, as inclicated inFig. 8, and as previously described in connection with the form of myinvention shown in Figs. 1 to 6.

Having described two forms of my invention, it will be seen thatI haveprovided very simple mechanism by which the selvage warp threads aredepressed at the rear of the pile wires so that the crossing of thethreads occurs closely adjacent the lower edge' of the depressingdevice, and so that the filling thread may be drawn from a pointsubstantially at the fell of the fabric. filling thread is thusinserted, it can be beaten up without forming any loop at the selvagerWith this'description of my invention and its advantages in mind, I donot wish to be limited to the details herein disclosed, otherwise thanas set forth in the claims, but what I claim is 1. Ina cross wire carpetloom, means to hold the last inserted pile wire from rearward movement,and a device mounted 011 the loom frame adjacent the selvage at the fellof the cloth and elfective to depress the selvage pile warps by downwardengagement therewith at the rear of but closely adjacent to the lastinserted pile wire.

2. In a cross wire carpet loom, means to hold the last inserted pilewire from' rearward movement, and means to depress the selvage pilewarps at the rear of but closely When the adjacent to the last insertedpile wire, said latter means being mounted to'yield forwardly as the layheats up.

3. In a cross wire carpet loom, means to hold the last inserted pilewire from rearward movement, a Warp depressing device mounted on theloom frame adjacent the selvage at the fell of the cloth and effectiveto depress the selvage pile warps by downwardengagement therewith at therear of but closely adjacent to the'last inserted pile wire, and meansto force the rear end of said depressing device downward against saidpile warps.

'4:.'I11 a cross wire carpet loom, means to hold the last inserted pilewire from rearward movement, a warp depressing device engaging theselvage pile warps atthe rear of the pile wire, means to force the rearend of said depressingdevice downward against v said pile warps, andadditional means to force said depressing device yieldingly rearward.

5. In a cross Wire carpet loom, means to 5 hold the last inserted pilewire from rear- Ward movement, a Warp depressing devlce, a

support on which said device is pivoted and also slidable, and yieldingmeans to force said device rearward and downward. m 6. In a cross wirecarpet loom, a stand, a latch pivoted thereon, means to 'yieldinglydepress said latch, a warp depressing device movably mounted on saidlatch, and means to'move said depressing device rearward and downward tooperative posit-ion relative to said latch.

7. In a cross Wire carpet loom, a stand, a latch pivoted thereon, meansto yieldingly depress said latch, a warp depressing device movablymounted on said latch, and means to move said depressing device rearwardand downward to operative position relative to said latch, saiddepressing device having a stud and cam slot connection with said latch.In testimony whereof I have hereunto affixed my signature.

VALTER HALL.

